<!doctype html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Web预览ppt</title>
    <style>
        .body-style {
            width: 640px;
            margin-left: -40px;
            margin-top: -50px;
            transform: scale(0.9, 0.9);
            overflow-x: scroll;
            overflow-y: hidden;
        }
    </style>

</head>

<body class="body-style">
    <iframe
        src="http://view.officeapps.live.com/op/view.aspx?src=https://gitee.com/web_lxy/cases/raw/master/CommonAppDevelopment/feature/webpdfviewer/src/main/resources/rawfile/sample.pptx"
        width="100%" height="800px" frameborder="0"></iframe>
</body>

</html>